Northern Airborne Technology AA83-001 rev.4.00 - Manual (Page 35)

SM09-2A Rev. 4.00 AA83-001 InterMUSIC™ Stereo Intercom System Manual
Section 3 Operation
3.1 Introduction
Information in this manual consists of the functional and operational procedures for the
AA83-001 InterMUSIC
™
Stereo Intercom, serial numbers 2939 and later.
3.2 General Operation
The AA83-001 is a 4-place stereo voice-activated intercom, providing full intercom
capabilities for pilot, copilot and two passengers (PAX). The AA83-001 has a built-in
tieline with tie/split capability, providing support for additional users in a multi-unit
system.
The AA83-001 also provides transmit capability for pilot and co-pilot to a single COM
radio or audio selector panel. The AA83-001 accepts stereo music inputs from either
portable or fixed entertainment systems to produce high quality stereo headset output.
The InterMUSIC
™
family of stereo intercoms allows several installation configurations -
from single unit systems, to fully independent stations for the pilot, copilot and
passengers. For expanded systems, tie line connections are compatible with other NAT
systems including AA82, AMS4x and AA9x series units.
3.2.1 Stereo & Intercom Special Features
The stereo music audio is muted during transmit or intercom operation and when radio
receive audio is detected, permitting greater intelligibility of incoming transmissions.
The AA83-001 muting depth adjustment ranges from complete music muting to gentle
background music on command, with a fast attack and slow level return for optimum
user comfort. Each microphone is individually gated, for the best possible noise
performance during VOX operation. A front panel annunciator allows easy visual
setting of the VOX threshold, and also indicates transmit operation.
3.2.2 Communication Functions
The AA83-001 provides full boom-mic transmit and ICS functions for the pilot and
copilot, and provides ICS and radio monitor operation for two additional passengers.
Pilot priority on transmit and pilot isolation/fail-safe (direct connection to the aircraft
radio system) are standard features on all NAT intercom systems. The AA83-001 can
support PTT ICS operation for all users, and can be wired to cyclic/yoke switches for
both TX and ICS functions.
Feb 8, 2006 Page 3-1
ENG-FORM: 806-0106.DOT
CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD.